O To Son Tung Joint Stock Company Address: No 49, Lane 92, Thuy Linh Street, Linh Nam Ward, Hoang Mai District, Ha Noi City Enterprise code: 0109160308 Phone: 0985908888 Representative: Nguyen Quang Trong Adress: Hamlet 11, Civil Group 31, Linh Nam Ward, Hoang Mai District, Ha Noi City Linh Nam Ward, Hoang Mai District, Ha Noi CityFounding date: 21 - 4 - 2020